.cho { margin: 0; min-height: 4.5rem; display: grid; place-items: center; text-align: center; font-size: clamp(1.8rem, 10vw, 3rem); font-weight: 600; letter-spacing: .15em; overflow-wrap: anywhere; user-select: none; }
#answer { font-size: 1.3rem; text-align: center; }
button:disabled { opacity: .5; cursor: default; }